1 Land contracts or contracts for deed are a security agreement between a seller, called a Vendor, and a buyer, called a Vendee.  The Vendor agrees to sell a property by financing the purchase for the Vendee.
The two DNA strands are held together by interchain hydrogen bonds. H-bonds pair the bases in one chain to the complementary bases in the other chain. (A/T and G/C).
On a single strand of DNA the nucleotides are held together by covalent bonding between the phosphate group bonded to the 5' end of the deoxyribose, which bonds to another deo â¦ xyribose molecule attached to the next nucleotide on the strand at the 3' end of the sugar.This is what holds together a single strand.he chemical bond that holds the double helix together in DNA are  the hydrogen bonds. Hydrogen bonds are the weakest making them  perfect for DNA replication.